Bluetooth disappeared in Windows

• Estimated time: 2 min
• Easy
• Low risk

Separate a switched-off control from an absent adapter.

1. In Windows 11 open Settings > Bluetooth & devices; in Windows 10, Settings > Devices. Check airplane mode and Bluetooth. When permitted, turn airplane mode off and enable Bluetooth if its switch exists.

2. If it returns and connects, stop. If present but unable to connect an accessory, use Bluetooth won’t connect. If the control is missing or unresponsive, read the adapter in Device Manager to choose the branch.

• Estimated time: 5 min
• Easy
• Low risk

1. In Device Manager expand Bluetooth and open the adapter’s properties, not a headset’s. If marked disabled and authorized, use Enable device; do not uninstall it.

2. If status becomes normal and the switch returns, test connectivity and stop if working. If the switch remains missing but status is normal, run the Bluetooth troubleshooter in Get Help and keep its result. If status shows a code, follow that exact branch.

• Estimated time: 5 min
• Easy
• Low risk

1. Keep the full message from Properties > General. Code 10 means it cannot start; 31 means required drivers cannot load; 43 means Windows stopped it after a reported problem. Use the related guide for that code.

2. For Intel, also compare model and additional text with its documentation. Do not install another adapter’s package or remove every Bluetooth device because they share a category.

• Estimated time: 5 min
• Easy
• Low risk
• Restart required

1. Save work and use Start > Power > Restart once. If Bluetooth returns, record whether failure followed sleep, hibernation or an update. Recovering detection suggests reviewing state, power and driver behavior; it does not establish a physical repair.

2. If it recurs in the same context, record the driver version before and after and consult the model’s OEM package. After a recent change, consider a specific rollback with support; do not reinstall all chipset and Bluetooth packages without identifying what changed. If it does not return, follow the absence branch.

• Estimated time: 15 min
• Easy
• Low risk

1. For a USB dongle, prepare alternate input if you depend on a Bluetooth keyboard or mouse, close its activity and test directly in another compatible port. If still absent, compare on another compatible, authorized computer. Working there points toward the original port and Windows; failing there too calls for manufacturer support before buying a replacement.

2. For an integrated adapter, verify that the exact PC model includes Bluetooth and find its official package for your Windows. View > Show hidden devices can preserve the previous name, but a faded entry does not establish current presence. Do not open the laptop or disconnect its battery to apply another model’s workaround.

3. If the OEM offers a relevant correction, install it with work saved and recovery prepared; without detection or a clear correction, send the model and results to support. Do not repeat reinstalls without a state change.